Function composition

Function composition is the process of combining two functions so that the output of one becomes the input for the other. Think of it like linked steps: first, you apply the first function to a value, then take that result and apply the second function to it. For example, if you have a function that doubles a number and another that adds three, composing them means creating a new process where you first double a number, then add three to the result. It’s a way to build more complex operations from simpler ones by connecting functions in sequence.